The following html code prints {{1+1}} instead of 2
<!doctype html>
<html lang="en" ng-app="myApp">
<head>
<script src="/js/angular.min.js"></script>
</head>
<body>
{{1+1}}
</body>
</html>
While if I remove "myApp" like below, it prints 2 correctly.
<!doctype html>
<html lang="en" ng-app>
<head>
<script src="/js/angular.min.js"></script>
</head>
<body>
{{1+1}}
</body>
</html>
Because you don't specify the module myApp
so it blows up on the error.
Open web inspector console to see it.
// adding this will fix it
angular.module('myApp', []);